Ascon Tecnologic - KX6 Series - ENGINEERING MANUAL - Vr. 0.0
PAG. 2
2. ConneCtion diAgrAm
Thermocouple
DI1
Out1 (2A)
Out2 (2A)
Out3 (2A)
Out4 (2A)
Analogue Input
RS485
mA
Neutral
100... 240 VAC
100... 240 VAC
24 VAC/VDC
C
NO
NO
C
Phase
1
2
2
1
4
3
6
5
8
7
10
9
12
11
NO
14
13
16
15
18
17
20
19
22
21
24
23
NO
C
IN1
IN2
GND
D-
D+
DI2
Potentiometer
100
Ω
... 10 k
Ω
2.1 generAl notes About wiring
1.
Do not run input wires together with power cables.
2.
External components (like zener barriers, etc.) connected
between sensor and input terminals may cause errors in
measurement due to excessive and/or not balanced line
resistance or possible leakage currents.
3.
When a shielded cable is used, it should be connected at
one point only.
4.
Pay attention to the line resistance; a high line resistance
may cause measurement errors.
2.2 inputs
2.2.1 thermocouple input
1
2
+
_
external resistance:
100
Ω
max., maximum error 25
m
V.
Cold junction:
automatic compensation between 0... 50°C.
Cold junction accuracy:
0.05°C/°C after a warm-up of
20 minutes.
input impedance:
> 1 M
Ω
.
Calibration:
According to EN 60584-1.
note:
For TC wiring use proper compensating cable
preferable shielded.
2.2.2 mA input
0/4... 20 mA input wiring for passive transmitter
using an external power supply
+
_
+
_
1
2
0/4...20 mA
Passive
transmitter
_
External
PWS
+
input impedance:
< 50
W
.
0/4... 20 mA input wiring for active transmitter
0/4...20 mA
Active
transmitter
+
_
+
_
1
2
input impedance:
< 50
W
.
2.2.3 digital inputs
note:
The instrument needs 150 ms to recognize a contact
status variation;
Digital input 1 driven by dry contact
3
4
Digital
input 1
maximum contact resistance:
100
Ω
.
Contact rating:
10 V, 6 mA.
notes: 1.
Logic input 1 is
not
isolated from the measuring
input. A double or reinforced isolation between
logic input 1 and power line must be ensured by
external elements.
2.
Do not run logic input wiring together with power
cables.
Digital input 2 driven by 24 VAC/DC or 100... 240 VAC
22
23
24
Digital
input 2
100... 240 VAC
Common
24 VAC/DC
notes: 1.
The isolated DI2 Digital Input must be used
in only one
of the two available connections:
• High level input (100... 240 VAC);
• Low level input (24 VDC/AC).
2.
The terminals of logic input 2 (high/low level) are
isolated from the measuring input. In this way, the
instrument itself ensures a double or reinforced isola-
tion between logic input 2 terminals and power line.
2.2.4 potentiometer input
Safety notes:
Do not run potentiometer input wiring together with power
cables.
13
14
15
Potentiometer
100
Ω
... 10 k
Ω
Input 2
potentiometer value:
From 100
Ω
to 10 k
Ω
.
